Extension-fixture for chandeliers



(No Model.)

B. A. WOODING.-

EXTENSION FIXTURE FOB. GHANDELIBRS.

N. PETERS. "w n-W- Wm RC UNITED STATES PATENT Orr rc n.

RALPH A. WQODING, OF KENSINGTON,AS SIGNOR TO THE CHARLES PARKER COMPANY, OF MERIDEN, CONNECTICUT.

EXTENSION-FIXTURE FOR CHANDELIERS.

SPECIFICATION forming part of Letters Patent No. 281,656, dated July 17, 1883.

Application filed May 29,1883. (No model.)

To all whom it may concern..-

Be it known that I, RALPH A. WOODING, a citizen of the United States, residing at Kensington, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Extension-Fixtures for Chandeliers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked'thereon, which form a part of this specification.

This invention relates to extensiontubes for chandeliers and other drop-lights; and it consists in a novel clamp, hereinafter-described, for attaching the outer and inner tubes-together so as to arrest the descent of the chandelier at any desired point, and in certain other devices, hereinafter set forth and claimed.

In the accompanying drawings, Figure 1 represents a vertical section taken through a chandelier-fixture embodying the said invention, the center box and arm-attaching devices having been removed. Fig. 2 represents a detail interior View of one-half of the upper end of the movable inner tube. Fig. 3 represents adetail view of the grooved sliding plugkey and transverse piece, whereby the tubes are locked together.

A designates a canopy of a chandelier; B, the fixed upper tube of the same, which is de tachably secured to said canopy, as usual; C, the lower tube, which is telescopically movable up and down within said upper tube for the purpose of varying the elevation 'of the light; and D, the cord or chain whereby the devices for clamping the tubes together are suspended from a drum, E, supported on the canopy. This drum is spring-impelled, so as to draw said devices upward. The lower end of said cord or chain is attached to a lug, f, on the upper end of a sliding block, F, which is provided in one face with a longitudinal groove, F, and has a hole, F passing transversely through it into said groove. This groove receives an inclined rib, G, which is fixed to the inside of the upper end of lower of my invention.

tube, C. Opposite tothisinclinedriban opening, H, receives a shoe, M, allowing the latter to be moved in and out. The outer face of this shoe is curved to correspond to the shape of the inside of the outer tube, 13. The inner face of saidshoe is flat, and preferably provided with a longitudinal groove, m.

' N designates a cylindrical tranversely-sliding piece, which passes through hole F and enters groove m, one end of said piece bearing against shoe M and the other end against inclined rib G. As the inclination of the face of this rib is upward and inward, the upward mo tion of sliding block F causes the cylindrical piece N to be moved transversely of the tube .by said inclined rib, therebyforcing shoe M through or partly through opening H against the outer tube, B. The said inclined rib, cylindrical piece, and shoe then combine to clamp said tubes securelytogether. Of course the piece N may be a'shape other than cylin- 7o drical, and the other parts may be varied to some degree without departing from the spirit The rib G and groove F guide said block so as to insure its moving up and down in a straight line, whereby the end of the transversely-moving piece N is retained in position to come in contact with the inclined face of said rib. This guiding of course will not continue when the block F is drawn down below said inclined rib. Itherefore employ a guide-rod, I, which is rigidly attached at its top to canopy A, and extends down within the inner tube, 0, to a point some distance below the upper end of this latter tube. A longitudinal. groove, F in said 85 block fits upon said guide-rod and prevents said block from turning. This also prevents the suspension cord or'chain D from turning or twisting. The lower end of said rod I is constructed with a head or enlargement, J, which acts as a guard to prevent injury in case the suspension cord or chain breaks. Under such circumstances the lower tube falls until the block F comes in contact with said head, and the transversely-moving piece N, inclined rib G, and shoe M then operate, as aforesaid, to clamp said tubes B and 0 together and prevent further descent of the latter.

drum E to turn the latter and cause it to draw on cord or chain D and block F, so as to hold the tubes B and C normally clamped. Of course any suitable form or arrangement of suspension or supporting spring or a counterbalance-weight maybe employed, the general object being the same.

To release the clamping devices and allow the descent of the lower tube, a rod, 0, is employed, which. extends downward from block F, to which it is detachably secured. The lower end of this rod 0 is screw-threaded to fit a screw-threaded socket in the inner end of a cylindrical extension, I of a tapering knob, I, which forms a bottom tip for the chandelier-fixture. An annular shoulder, p, on said tip is against the lower end of lower tube, 0, and is adapted, also, to receive and support the bottom of the center box.. The extension I? is within the lower part of said tube, and constitutes a brace therefor. This tip or knob P affords an excellent grasp for the hand, for drawing down the sliding block and loosening the clamping devices. It is easily detachable from rod 0, simply by unscrewing it.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the movable and immovable parts of a chandelier -fixture, the grooved sliding block I, suspension devices therefor, an inclined rib attached to the movable part of the fixture, a piece arranged to come in contact with said rib and move through said block, and a shoe, which said piece forces outward against the immovable part of said chandelier-fixture, substantially as set forth.

2. The lower tube, (7, having an inclined rib formed on the inside of its upper end, and an opening formed in said upper end opposite said incline, in combinationwith a shoe adapted to move out through said opening against the inside of the fixed upper tube, and atransversely-moving piece arranged to come in contact with said rib and operate said shoe, for clamping said tubes together when said piece is drawn upward, substantially as set forth.

3. In a chandelier-fixture or drop-light, the combination of a fixed upper and outer tube with a movable inner and lower tube, having an opening near its upper end, apiece adapted to move through said opening andbear against said outer tube for the purpose of locking said tubes together, and devices for actuating said piece to effect said lockin 4. A fixed guide-rod, in combination with a sliding block, which is grooved to receive said rod, and devices for clamping the tubes of an extension-chandelier, which are operated by the upward motion of the said block, substantially as set forth.

5. The guide-rod, in combi nation with block F, inclined rib G, a piece adapted to move transversely through said block, a shoe adapted to be forced outward by said piece, and the movable and immovable parts of the chandelier-fixture, substantially as set forth.

6. A fixed upper tube, a movablelower tube, clamping devices, which automatically hold said tubes together, and a fixed rod, which is provided with a head or enlargement that is arranged to come in contact with said clamping devices and actuate the same whenever the suspending-cord breaks and the lower tube begins to fall, substantially as set forth.

7 An extension chandelier-fixture provided with a fixed rod, arranged to prevent any rotary motion or twisting of the chandelier or its suspending-cord, substantially as set forth.

In testimony whereofI affix my signature in presence of two witnesses.

RALPH A. XVOODING.

\Vitnesses:

DEXTER XV. PARKER, RALPH A. PALMER. 

